Electric motor.



PATENTED AUG. 25, 1903.

A. K. BRAUN. ELECTRIC MOTOR. APPLICATION FILED JULY s, 1903 N0 MODEL.

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Patented August 25, 1903 PATENT j OFFICE.

AUGUST K. BRAUN, OF NEW YORK, N. Y.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 737,553, dated August25, 1903:

Application filed July 3, 1903- Serial No.164|181. (No model.)

To all whom it may concern:

Be it known that I, AUGUST K. BRAUN, a citizen of the United States ofAmerica, and a resident of New York, in the county and State of NewYork, have invented a certain new and useful Electric Motor, of whichthe following is a specification.

My invention relates to devices wherein the application ofelectromagnetism to the propulsion of machinery is utilized, andparticularly to that class of electric motors in which an armature isattracted by the energization of an electromagnet; and it has for itsobject the provision of an apparatus of the kind set forth simple inconstruction, inexpensive to manufacture, and which operates rapidly andefficiently in practical use.

To attain the desired end, this my invention consists in theconstruction, arrangement, and operation of parts herein set forth.

In order to enable my invention to be fully understood, I will proceedto explain the same by reference to the drawings which accompany andform a part of this specification, in which-- Figure 1 represents a planview of a small motor embodying my invention, and Fig. 2 is a sideelevation of the same.

Like letters of reference indicate like parts in both views.

Referring particularly to the drawings, A denotes the base of my motor,which consists of a hollow or box-like structureconstructed to containan electric battery, the same being preferably made of a truncatedpyramid shape and having the sides lined oif in imitation of brickworkin order to represent the solid bed of a power-motor. the base A maycontain an electric battery 13, the electrodes of which are respectivelyconnected with the post a, located on the exterior of the base A, andthe wire b, extending upwardly through the base and being electricallyconnected with the electromagnets 0 C and C C The electromagnet O isconnected with the insulated spring-finger D, and the electromagnet O iselectrically connected with the insulated springfinger D. The saidelectromagnets are supported by a preferably integral metal frame E,provided with oppositely-disposed bearings e and with legs 6 and aprojecting The interior ofarm E, provided with vertical lugs 6 in whichis journaled a shaft F, carrying a pulleyf, fly-wheel f, pin orprojection f and a crank-arm f The reciprocating armature The switch ais electrically connected with the frame E of my apparatus, preferablyby means of a Wire running from the said frame to the switch a. v

In operation upon the switch a being closed or put in electricconnection with the post a the electric current will pass through onepair of electromagnets-say the magnets C Othence through wire b to theinsulated spring-finger D, which may at this moment be in electricconnection with the rotatable pin or projection f which revolves betweenand alternately engages the spring-fingersD and D. The armature beingina median position between the two pairs of electromagnets is nowattracted by the electromagnets O C and upon approachingthe same causesthe momentum of the fly-wheel a new circuit will be established throughthe wires 1) b with the electromagnets (J C and springfinger D, thearmature-rod in the meantime having been moved by the crank-arm f andlink 9 to its median position again. The armature is now attracted tothe electromagnets 0 O and the shaft F is caused to rotate by thereciprocal movement of the armature G.

As it is evident that many changes in the construction, form,proportion, and relative arrangement of parts might be resorted towithout departing from the spirit and scope of my invention, I wouldhave it understood that I do not restrict myself to the particularconstruction and arrangement of parts shown and described, but that suchchanges and equivalents may be substituted therefor, and that What Iclaim as my invention is-- 1. In combination, two pairs ofoppositelydisposed electromagnets, a reciprocating armature locatedtherebetween and sustained by a rod passing through the magnet supportor frame, a support for a shaft, two insulated springs, a projection onthe shaft to engage each spring alternately, a crank-arm on said shaft,and a link intermediate the crank-arm and the armaturerod, and a hollowbase, a switch located exteriorly of the same, and a battery containedwithin the base.

2. In combination, two pairs of oppositelydisposed electromagnets, areciprocating armature located therebetween and sustained by a rodpassingthrough the magnet support or frame, a projecting arm thereofforming a support for a shaft, two insulatedspring's, a projection onthe shaft to engage each spring alternately, a crank-arm on said shaft,and a link intermediate the crank-arm and armature-rod, the said framealso serving to hold the magnet and shaft rigidly in position, and twoterminals of an electric circuit, an electric connection'from oneterminal through one coil to one of said fingers and an electricconnection from the said terminal through the other coil to the otherspring-finger, and also an electric connection between the shaftprojection and the second terminal, and a hollow base, a switch locatedexteriorly of the same, and a battery contained within the base.

In testimony of the foregoing specification I do hereby sign the same,in the city of New York, county and State of New York, this 29th day ofJune, A. D. 1903.

AUGUST K. BRAUN. Witnesses:

ROB. SCHWARZ, J. ODELL FOWLER, Jr.

